feat: don't set log owning org as user's org if that org doesn't hold stock

app/controllers/logs_controller.rb

@@ -60,8 +60,9 @@ private
   end
 
   def org_params
+    owning_organisation_id = current_user.organisation.holds_own_stock? ? current_user.organisation.id : nil
     {
-      "owning_organisation_id" => current_user.organisation.id,
+      "owning_organisation_id" => owning_organisation_id,
       "managing_organisation_id" => current_user.organisation.id,
       "created_by_id" => current_user.id,
     }